Step1. Various Immersion Methods

1. Vacuum pressure → Penetration → Pressure Immersion

2. Penetration→ Vacuum Pressure → Pressure Immersion

3. Penetration, Dripping Paint Coating Immersion

4. Heating Immersion

Step2. Hardening and Fixed

1. Fluid heating

2. Atmospheric heating

3. Light hardening

4. Chemical reaction fixation